Biography for Skinny Rules : The Simple, Nonnegotiable Principles for Getting to Thin

Random House, Inc.Bob Harper is a world-renowned fitness trainer and star of the NBC reality seriesThe Biggest Loser, which finished thirteenth season in 2012. With several bestselling fitness DVDs, his own line of supplements, an online fitness club, as well as the inspirational bookAre You Ready? to his credit, Harper still teaches a local spin class where he resides in Los Angeles with his dog Karl.

Greg Critser is a longtime science and medical journalist. The author of the international bestsellerFat Land: How Americans Became the Fattest People in the World, he lives in Pasadena, California.